Make a backup of the folder "/assets/snippets/jot/".
Also, remember that this modification will only work on a server running PHP 5.
PHP 4 will throw fatal errors.
Download my Jot 1.1.3 modifications
This archive unzips to a folder with the file "jot.class.inc.php". Upload this file to "/assets/snippets/jot/" and overwrite or replace the existing file.
There is also a folder in the archive called "includes". Upload the contents of this folder to "/assets/snippets/jot/includes/".
This is the class I wrote to purify the post as well as the HTML Purifier 3.1.0 library.
I have modified jot.class.inc.php to include my class and use it as a filter. Additionally, I have modified the jot class to send notifications as HTML instead of as plain text. This gives you a greater deal of flexibility in your notification templates.
Dr. Scotty Delicious, DFPA.